Stem cells -are biological cells found in all multi cellularorganisms‚ that can divide (throughmitosis) and differentiate into diverse specialized cell types and can self-renew to produce more stem cells. In mammals‚ there are two broad types of stem cells: embryonic stem cells‚ which are isolated from the inner cell mass of blastocysts‚ and adult stem cells‚ which are found in various tissues. In adult organisms‚ stem cells and progenitor cells act as a repair system for the body‚ replenishing
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allow cell phones to be sold without pre-market testing. The rationale‚ known as the “low power exclusion‚” distinguished cell phones from dangerous microwave ovens based on the amount of power used to push the microwaves. At that time‚ the only health effect seen from microwaves involved high power strong enough to heat human tissue. The pressure worked‚ and cell phones were exempted from any type of regulatory oversight‚ an exemption that continues today. An eager public grabbed up the cell phones
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Celiac Disease Celiac Disease is an auto-immune disorder that sucks to have. Once diagnosed you have to stay on a gluten free diet for the rest of your life. Gluten is a protein found in wheat‚ rye‚ and barley. These grains are in many foods that we eat today and it is an extremely hard diet to be on. If you aren’t diagnosed and eat gluten regularly you are pretty much screwed and have a greater chance of dying earlier than you would of a normal person. 1 in 133 people have Celiac disease. This essay
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drives me to start exploring the influences of mobile technology to human’s lives as it is being so widely used in modern society. As we all know‚ the world is being connected much closer because of the development of information technology. The evolution of the information technology shows how human’s lives are being changes. Speaking of the advanced information technology today‚ mobile technology cannot be ignored. According to the International Telecommunication Union (ITU)’s “The World in 2010″
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The history/evolution of computing predates silicon microchips and CPUs by hundreds of years. The modern computers we are all familiar with can trace their roots back to simple computational machines that seem far removed from what we think of as a computer today. Simple Computers • By definition‚ a computer is any device capable of performing mathematical equations or calculations. Therefore‚ many simple devices such as an abacus (which dates back to at least 300 BCE) or a slide rule (first
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increases in complexity? A) ecosystem‚ population‚ organ system‚ cell‚ community‚ molecule‚ organ‚ organism‚ tissue B) cell‚ molecule‚ organ system‚ organ‚ population‚ tissue‚ organism‚ ecosystem‚ community C) organism‚ organ system‚ tissue‚ population‚ organ‚ community‚ cell‚ ecosystem‚ molecule D) molecule‚ cell‚ tissue‚ organ‚ organ system‚ organism‚ population‚ community‚ ecosystem E) ecosystem‚ molecule‚ cell‚ tissue‚ organism‚ organ system‚ organ‚ community Answer: D Topic:
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microorganisms. Their cell structure is unique in that they don’t have a nucleus and most bacteria have cell walls similar to plant cells. They come in all sorts of shapes including rods‚ spirals‚ and spheres. Some bacteria can "swim" around using long tails called flagella. Others just hang out or glide along. Are bacteria dangerous? Most bacteria aren’t dangerous‚ but some are and can make us sick. These bacteria are called Pathogens. Pathogens can cause diseases in animals and plants.
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The Evolution Of The Computer Introduction The evolution of electronic computers over a period of time can be traced effectively dividing this period into various generations. Each generation is characterized by a major technological development that fundamentally changed the way computers operated. These helped to develop smaller‚ cheaper‚ powerful‚ efficient and reliable devices. Today‚ life has become indispensable without a computer. You find computerization in almost every sphere and industry
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Gene therapy for disease (: Most of us‚ don’t think there are many cures for a lot of diseases and types of medical treatment we didn’t think was possible basically that is what gene therapy is in a nut shell; with its potential to eliminate or prevent diseases such as cystic fibrosis and hemophilia. It could even find a cure for AIDS‚ cancer‚ and heart disease. Gene therapy could be a medical life saver. What is Gene therapy for disease? Genes are what make you ‚ you. We get half of our genes
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things are composed of cells? Cell theory What type of microscope would be best for studying the detailed structure of the surface of a plasma membrane? Scanning electron microscope The two basic types of cells are ______ and ______. Prokaryotic . . . eukaryotic When using a light microscope to view a cell you obtained from scraping under your fingernails‚ you notice that the cell lacks a nucleus; therefore‚ you conclude that the cell must be a type of ______ cell. Prokaryotic One
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